On my LP12 with IttokLV2 my most favorite cart was the Shinon Red Boron. some compared it to the Koetsu sound.I had mine mounted on a low mass wall mount, with a corian base on spikes. As the Shinon is no longer available, I would be happy with a Koetsu. Or go nuts and get a Soundsmith Strain gauge ! works well in the Ittok :)
Ron